package com.tony.study.thread;

/**
 * Created with IntelliJ IDEA.
 *
 * @Title: PCDemo02
 * @Auther: 皮蛋布丁
 * @Date: 2021/10/31/22:02
 * @Description: 测试生产者消费者问题2：信号灯法，使用标志位解决
 */
public class PCDemo02 {

    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }
}
//生产者-->演员
class Player extends Thread {
    TV tv;
    public Player(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i%2 == 0) {
                this.tv.play("快乐大本营播放中");
            } else {
                this.tv.play("抖音记录美好生活");
            }
        }
    }
}
//消费者-->观众
class Watcher extends Thread {
    TV tv;
    public Watcher(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.wathc();
        }
    }
}
//产品-->节目
class TV {
    //演员表演，观众等待 T
    //观众观看，演员等待 F
    String voice;//表演的节目
    boolean flag = true;
    //表演
    public synchronized void play(String voice) {
        if (!flag) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了："+voice);
        //通知观众观看
        this.notifyAll();   //通知唤醒
        this.voice = voice;
        this.flag = !this.flag;
    }

    //观看
    public synchronized void wathc() {
        if (flag) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了："+voice);
        //通知演员表演
        this.notifyAll();
        this.flag = !this.flag;
    }
}
